Siemens (OP121) Photoelectric Smoke Detector - S54372-F1-A1

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Siemens OP720 Optical smoke detector, S54310-F1-A1

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SIEMENS OP121 Photoelectric Smoke Detector and Photo Smoke-Thermal Detector Instruction Manual

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Simplex (4098-9701) Photoelectric Smoke Sensor

Siemens OP121 from Siemens Fire Safety is a photoelectric smoke detector with microprocessor-controlled, self-diagnostic circuitry, eliminating the need for burdensome sensitivity test equipment. Siemens OP121 also comes with a new magnet-test feature. The magnet-test feature allows installers and test personnel to prove the integrity of the wiring and proper connection to the fire alarm control panel (FACP).

Siemens OP121 Photoelectric Smoke Detector

Siemens S54372-F1-A1 OP121 PHOTOELECTRIC SMOKE DETECTOR, 0-38°C OPERATING TEMPERATURE, 16-27VDC

Siemens OP720 Optical smoke detector, S54310-F1-A1